The popular blockchain online game hit the highest trading volume in the past 24 hours, thanks to the purchase of Dragon, a Cryptokitty, for 600 ETH. Dragon made a new record, after Founder Cat #18 was sold for 253 ETH ($110K at purchase time) in December last year. Dragon is an average Cryptokitty with average attributes, which make some wonder whether the transaction was made for money laundering purposes.